Improvement in compound metal-working machines



H. B. SEVEY.v l Conipnund Metal-.Working Machines. N0. 143,722. y Patented 0ct.14,18-T3.

UNITED STATES 4PATENT OEEIGE HIRAM B. sEvEY, or VIENNA, MAINE.

IMPROVEMENT IN COMPOUND METAL-WORKING MACHINES.`

Specification forming part of Letters Patent No. 143,722, dated October 14, 1873 application filed September 15, 1873.

To all whom it may concer/n:

Be it known-that l, HIRAM B. SEVEY, of

5 Vienna, in the county of Kennebec and State art to which it appertains to make and use the same, reference being had to the accompanying drawings and to the letters of reference marked thereon, which form a part of this specication.

Figure l is a side view of my invention .with parts broken away; Fig. 2, a detail View.

Same letters show like parts.

The object of my invention is to produce a machine for cutting and bending metal.

a shows the bed or frame of the machine. b shows a movable arm, pivoted to the frame at c. d d show the shearsf cl is attached to the arm b d', to the ame of the machine, as shown. e represents cogs on the arm b, into which mesh the cogs f of the eccentric g. This eccentric g is connected with the handlever h and the frame of the machine by the links t' j. k is a-die, a front view of which is shown in Fig. 2. This is set into the frame of .the machine, as illustrated in Fig. l. Into this die fits the stamping or bending device l on the end of the arm b, when said arm is thrown downward by the movement ofthe hand-lever h, and the consequent movement of the eccentric g. This die consists of three forms, (shown in Fig. 2,) two of which, m n, are designed more particularly for bending horseshoes; the other one, o, for bending iron into a square or V shape. The stamping or bending device Z, composed of its parts p q r, is of course made to conform to the shape of the die lc.

In the bed of the machine, as illustrated in Fig. 1, is set a spiral spring, s, one end of which is attached to a projection, t,- on the movable arm. This spring has for its purpose to throw the arm upward into the position shown in the drawing, when it has previously been thrown downward by the movement of the hand-lever h. The lower end of the lever h is pivoted to the frame of the machine nat u. This end of the lever is provided with cogs t. Atw is seen a cogged frame.

When a larger `purchase is desired than what is obtained with the lever pivoted at u, it (the lever) can be shifted down so that the cogs fv shall mesh with u, and as it is moved up or down these cogs will play up and down 1n fw.

The operation of my machine may be thus described: Wien the arm bis thrown downward by the movement of the lever h, and the consequent movement of the eccentric g, it brings f together the shears d d', the bending device l, and the die .k. It also expands or pulls apart the coils of the spiral spring s. When the hold on the lever h is released, the contraction of said spiral spring causes the machine to resume its original position, or, in other words, the position seen in Fig. l.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The arrangement .and combination of the bed or frame a, provided with the spring s and the cogged frame w, the armb, having the projection t and cogs 6, the shears d d, the eccentric g, with its cogs f, the links c' j, hand-lever h, with its cogs fu, bending device l, and die la, as herein set forth, to operate as a shears and metal-bender.

In testimony that I claim the foregoing I have hereunto set my hand this 8th day of September, 1873.

H. B. SEVEY.

Witnesses C. W. MAYHEW, FRANK WHITTIER. 

